When I had my ST's installed LTBMW set the rear with a 2 finger gap in the rear, and after 2 weeks it had settled to about a half finger gap. It settled so much that I need to drop the front a bit more as the fronts hardly settle at all.

I have an e92 though...

Same here, over the course of 4 years I have had to lift my rears quite a bit to keep up with Spring Sag and needing more clearance for meatier tires and aggressive wheel offsets.